WO2020054020A1 - Languette de connexion de cellule solaire, appareil et procédé de fabrication de languette de connexion de cellule solaire, et module de cellule solaire - Google Patents

Languette de connexion de cellule solaire, appareil et procédé de fabrication de languette de connexion de cellule solaire, et module de cellule solaire Download PDF

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Publication number
WO2020054020A1
WO2020054020A1 PCT/JP2018/033987 JP2018033987W WO2020054020A1 WO 2020054020 A1 WO2020054020 A1 WO 2020054020A1 JP 2018033987 W JP2018033987 W JP 2018033987W WO 2020054020 A1 WO2020054020 A1 WO 2020054020A1
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WIPO (PCT)
Prior art keywords
solar cell
tab
holding portion
length
wiring member
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Application number
PCT/JP2018/033987
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English (en)
Japanese (ja)
Inventor
辰也 石垣
洋介 井上
久志 國重
Original Assignee
三菱電機株式会社
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/033987 priority Critical patent/WO2020054020A1/fr
Publication of WO2020054020A1 publication Critical patent/WO2020054020A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a solar cell connection tab connected to a solar cell, a solar cell connection tab manufacturing apparatus, a method for manufacturing a solar cell connection tab, and a solar cell module.
  • the solar cell module is configured by electrically connecting a plurality of solar cells in series by a solar cell connection tab.
  • the solar cell connection tab may be simply referred to as a tab.
  • a flat copper wire or a metal foil made of a metal material is often used.
  • the tab is connected to the bus electrode of the solar cell by solder or resin.
  • the flat copper wire or metal foil used for the tab is wound in a roll shape in units of several hundred meters on a case such as a bobbin during the manufacturing process or during storage, and the drawn tab has a curl. Due to this curl, there is a problem that the tab is bent in the width direction when the tab is arranged on the light-receiving surface current collecting electrode of the solar cell, and the electrode of the solar cell is displaced from the tab.
  • the tabs protrude from the bus electrodes on the light receiving surface due to the displacement between the bus electrodes on the light receiving surface and the tabs in the width direction of the tabs, the tabs cover the light receiving surfaces of the solar cells.
  • the output of the solar cell module is reduced due to the reduction of the light receiving area due to the tab covering the light receiving surface and blocking the incident light to the solar cell.
  • the contact resistance between the bus electrode and the tab increases because the joining position of the tab to the bus electrode deviates from an appropriate position.
  • Patent Literature 1 discloses a straightening method in which after a wiring material pulled out from a bobbin is fixed to a fixing portion and a pulling portion, the pulling portion is moved to pull the wiring material to correct the bending of the wiring material. I have.
  • the solar cell module two adjacent solar cells connected by a tab are connected by a tab to the electrode on the light receiving surface side of one of the solar cells and the electrode on the back side of the other solar cell. Is done.
  • the tab is arranged so as to extend from the light receiving surface side of one solar cell to the back side of the other solar cell. For this reason, the tab has a stepped portion having a step corresponding to the thickness of the solar cell in a region corresponding to the space between the one solar cell and the other solar cell. Then, when the solar cell module is used, thermal stress due to a temperature change in an actual environment to which the solar cell module is exposed is concentrated on the step portion.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a highly durable solar cell connection tab in which disconnection due to fatigue caused by a temperature change in a real environment to which a solar cell module is exposed is suppressed.
  • a solar cell connection tab includes a first solar cell and a second solar cell arranged in parallel on the same plane with an inter-cell region interposed therebetween.
  • a solar cell module including a solar cell a first solar cell is provided on an electrode formed on a light receiving surface side of a first solar cell and an electrode formed on a back surface side of a second solar cell.
  • the work-hardened area exists in an area other than the area corresponding to the inter-cell area between the first solar cell and the second solar cell.
  • the solar cell connection tab according to the present invention has an effect of realizing a solar cell connection tab in which disconnection due to fatigue caused by a temperature change in a real environment to which the solar cell module is exposed is suppressed.
  • FIG. 2 is a plan view showing the appearance on the light receiving surface side of the solar cell module according to the first embodiment of the present invention.
  • Sectional view of the main part of the solar cell module shown in FIG. Main part plan view showing the appearance on the light receiving surface side of the solar cell string according to the first embodiment of the present invention.
  • FIG. 2 is a plan view showing the appearance of the light receiving surface side of the solar cell according to the embodiment of the present invention.
  • FIG. 2 is a plan view showing the appearance of the back surface side of the solar cell according to the embodiment of the present invention.
  • FIG. 4 is a plan view showing the appearance of the back surface side of another solar cell according to the first embodiment of the present invention.
  • Flow chart showing a procedure of a method for manufacturing a solar cell string according to the first embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing the arrangement of components in manufacturing the solar cell string according to the first embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing a state where two solar cells are connected by tabs in the solar cell string according to the first embodiment of the present invention.
  • FIG. 2 is a schematic side view showing a tab manufacturing apparatus that performs tab correction to correct the curvature of the tab according to the first embodiment of the present invention.
  • 5 is a flowchart illustrating a method for bending a tab according to the first embodiment of the present invention.
  • FIG. 2 is a schematic diagram showing positions of a cut portion and a tab pressing portion in a wiring member which is first drawn out of a bobbin and corrected in the tab manufacturing apparatus according to the first embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing the positions of the cutting portion and the tab pressing portion in step S130 when the manufacturing process is repeated from step S110 after cutting the wiring member in step S150 shown in the flowchart of FIG.
  • FIG. 15 a schematic diagram showing the positions of the cutting portion and the tab pressing portion when the second tab is cut in step S150 shown in the flowchart of FIG.
  • FIG. 2 is a schematic diagram illustrating a state where two solar cells are connected by a second tab according to the first embodiment of the present invention.
  • FIG. 12 is a schematic diagram showing positions of a cut portion and a tab pressing portion in a wiring member which is first drawn out of a bobbin in the tab manufacturing device shown in FIG. 12 and corrected.
  • FIG. 13 is a schematic diagram showing the positions of the cutting portion and the tab pressing portion in step S130 when the manufacturing process is repeated from step S110 after cutting the wiring member in step S150 shown in the flowchart of FIG. 20, a schematic diagram showing the positions of the cutting portion and the tab pressing portion when the second tab is cut in step S150 shown in the flowchart of FIG. FIG.
  • FIG. 4 is a schematic diagram of a state where two solar cells are connected by a second tab according to the second embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing a positional relationship among a light receiving surface bus electrode, a back surface bus electrode, a tab, and a tab pressing portion of the solar cell according to the second embodiment of the present invention.
  • FIG. 1 is a plan view showing the appearance on the light receiving surface side of solar cell module 100 according to the first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a main part of the solar cell module 100 shown in FIG. 1 along the line II-II.
  • FIG. 3 is a main part plan view showing the appearance on the light receiving surface side of solar cell string 50 according to the first embodiment of the present invention.
  • FIG. 4 is a main part plan view showing the appearance of the back surface side of the solar cell string 50 according to the first embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a main part of the solar cell string 50 according to the first embodiment of the present invention.
  • the light receiving surface side of the solar cell array 70 is covered with a light receiving surface side sealing material 83 and a light receiving surface protection material 81,
  • the back surface side of the array 70 facing the side opposite to the light receiving surface is covered with the back surface side sealing material 84 and the back surface protection material 82.
  • a metal frame (not shown) is attached to an outer peripheral portion of the solar cell module 100.
  • a terminal box (not shown) for extracting power and a cable connector (not shown) are attached to the back surface of the solar cell module 100.
  • the solar cell array 70 is configured such that a plurality of solar cell strings 50 are electrically and mechanically joined in series or in parallel by a horizontal tab 21 and an output tab 22.
  • the solar cell string 50 includes a plurality of solar cells 10 each having a rectangular flat plate shape arranged adjacent to each other and electrically and mechanically connected in series by a solar cell connection tab 20. It is configured to be connected to.
  • the solar cell connection tab is referred to as a tab.
  • all the solar cells 10 are electrically connected in series by the tab 20 and the horizontal tab 21.
  • the plurality of solar cells 10 are connected in series in the X direction in the drawing, which is the first direction, by tabs 20.
  • the first direction is a connection direction of the plurality of solar cells 10 connected by the tab 20.
  • FIG. 6 is a plan view showing the appearance on the light receiving surface side of solar cell 10 according to the first embodiment of the present invention.
  • FIG. 7 is a plan view showing the appearance of the back surface side of solar cell 10 according to the first embodiment of the present invention.
  • the solar cell 10 has a semiconductor substrate 11 having a quadrangular shape made of a p-type single-crystal silicon substrate in which an n-type impurity diffusion layer is formed and a pn junction is formed.
  • the semiconductor substrate 11 has therein a pn junction in which a P layer containing a large amount of p-type impurities such as boron and an n-layer containing a large amount of n-type impurities such as phosphorus are in contact.
  • the semiconductor substrate 11 has, for example, a thickness of 0.1 mm or more and 0.4 mm or less, and an outer shape in an in-plane direction of 150 mm or more and 160 mm or less. Substrate.
  • the upper side in the figure is the light receiving surface side of solar cell 10.
  • the outer shape of the semiconductor substrate 11 has a square shape in the surface direction of the semiconductor substrate 11.
  • the n-type impurity diffusion layer is formed on the light receiving surface 11A side of the semiconductor substrate.
  • a silicon nitride film as an antireflection film is formed on the light receiving surface 11A of the semiconductor substrate.
  • the illustration of the uneven shape and the antireflection film is omitted.
  • the light receiving surface electrode 12 is formed on the light receiving surface 11A side of the semiconductor substrate, that is, on the light receiving surface of the solar cell. As shown in FIGS. 3 and 6, on the light receiving surface of the solar cell, a plurality of light receiving surface finger electrodes 12F, which are light receiving surface current collecting electrodes for collecting electrons which are carriers generated by photo-electron conversion, and a tab 20 are provided.
  • the light receiving surface electrode 12 is formed of a light receiving surface bus electrode 12B which is a light receiving surface bonding electrode for bonding the electrodes.
  • the light-receiving surface finger electrode 12F is an electrode for collecting a photocurrent, and a plurality of thin linear electrodes are formed in order to collect the photocurrent while preventing the sunlight from reaching the inside of the solar cell 10. It is formed side by side in parallel. That is, the light-receiving surface finger electrode 12F has a function of collecting photogenerated carriers.
  • a plurality of the light-receiving surface finger electrodes 12F have a width of 0.1 mm or more and 0.2 mm or less, and It is formed at intervals of 2 mm or more and 4 mm or less.
  • the light receiving surface bus electrode 12B is an electrode that is electrically connected to the tab 20.
  • the light-receiving surface bus electrodes 12B are provided in four rows in a line shape over substantially the entire length of the solar cell 10 along a first direction which is a connection direction of the solar cell 10 as shown in FIGS. Have been.
  • the light receiving surface bus electrodes 12B are provided so as to be connected to all the light receiving surface finger electrodes 12F along a direction orthogonal to the light receiving surface finger electrodes 12F. That is, the light-receiving surface bus electrode 12B has a function of collecting the optical carriers collected by the light-receiving surface finger electrode 12F.
  • the light-receiving surface bus electrode 12B has a width of 1 mm or more and 3 mm or less, and two or more and five or less. It is formed in a linear shape or a ladder shape so as to intersect perpendicularly with the light receiving surface finger electrode 12F.
  • the light-receiving surface bus electrodes 12B and the light-receiving surface finger electrodes 12F are formed by applying a conductive paste having metal particles to a desired range and firing the paste.
  • the back electrode 13 is formed on the back surface 11B side of the semiconductor substrate which is the second main surface of the semiconductor substrate 11, that is, on the back surface of the solar cell.
  • a back surface current collecting electrode 13a containing aluminum (Al) which is a back surface current collecting electrode for collecting holes as carriers generated by photo-electron conversion, is provided.
  • a back electrode 13 which is a back bonding electrode for bonding the tub 20 and a back bus electrode 13b containing silver (Ag) is formed.
  • the back surface current collecting electrode 13a covers almost the entire region of the back surface of the solar battery cell other than the region where the back surface bus electrode 13b is formed.
  • the back bus electrode 13b is an electrode that is electrically connected to the tab 20, and is formed in a stepping stone shape along the first direction that is the connection direction of the solar cells 10 and over substantially the entire length of the solar cells 10. They are provided in four rows.
  • the back bus electrode 13b is arranged at a position facing the light receiving bus electrode 12B with the semiconductor substrate 11 interposed therebetween. That is, the back bus electrode 13b has a function of collecting the photocarriers collected by the back current collecting electrode 13a.
  • the back bus electrode 13b has, for example, a width of 1 mm or more and 3 mm or less, a number of 2 or more and 5 or less, and a shape in which spot-shaped rectangular corners are rounded, and at least three places per row, Stepping stones are formed in four places or less. In other words, for example, three to four back surface bus electrodes 13b are connected to one tab 20.
  • the back bus electrode 13b is formed on the back surface of the solar cell at the same position as the light receiving surface bus electrode 12B in the plane of the solar cell 10.
  • FIG. 8 is a plan view showing the appearance of the back surface side of another solar cell 10 according to the first embodiment of the present invention.
  • the shape of the back bus electrode 13b may be a spot-like elliptical shape as shown in FIG.
  • a light transmitting substrate made of a glass plate or a synthetic resin plate such as a polycarbonate resin is used.
  • the glass plate used for the light receiving surface protection member 81 white plate glass, tempered glass, double tempered glass, heat ray reflective glass, or the like is used. Generally, for example, a tempered glass sheet having a thickness of 2 mm or more and 5 mm or less is used.
  • the synthetic resin substrate used for the light receiving surface protection member 81 a substrate having a thickness of about 5 mm is often used.
  • the light receiving surface side sealing material 83 is a first sealing material disposed on the light receiving surface side between the light receiving surface protection material 81 and the back surface protection material 82.
  • the back surface sealing material 84 is a second sealing material disposed on the back surface between the light receiving surface protection material 81 and the back surface protection material 82.
  • the solar cell array 70 is sealed between the light receiving surface side sealing material 83 and the back surface side sealing material 84.
  • the light receiving surface side sealing material 83 and the back surface side sealing material 84 are made of, for example, ethylene-vinyl acetate copolymer (Ethylene Vinyl Acetate: EVA) or polyvinyl butyral (Polyvinyl Butyral: PVB) and have a thickness of 0 by an extruder.
  • a back sheet formed into a sheet having a thickness of about 4 mm or more and about 1 mm or less is used.
  • a weather-resistant fluororesin sheet having aluminum foil sandwiched from the front and back sides so as not to transmit moisture, a sheet of polyethylene terephthalate (PET) on which alumina or silica is deposited, or the like is used.
  • PET polyethylene terephthalate
  • the light receiving surface side sealing material 83 and the back surface side sealing material 84 are softened and fused by being heated and pressurized under reduced pressure by a laminating apparatus, and are integrated with other members constituting the solar cell module 100.
  • Become EVA or PVB used for the back surface side sealing material 84 may be transparent, and may contain titanium oxide or a pigment in accordance with the surrounding installation environment where the solar cell module 100 is installed to have a color such as white. It may be colored.
  • the tab 20 is an elongated strip-shaped wire made of a good conductor such as a copper wire.
  • the tab 20 is connected to the light receiving surface bus electrode 12B of one of the solar cells 10 and the back surface bus electrode 13b of the other solar cell 10 which are arranged adjacent to each other in the connection direction by solder or resin. Note that the surface of the tab 20 may be coated with solder.
  • the tab 20 is made of oxygen-free copper having a width of about 1 mm or more and about 3 mm or less, and a thickness of about 0.1 mm or more and about 0.3 mm or less. I have.
  • the width of the tab 20 is equal to the width of the light-receiving bus electrode 12B of the solar cell 10, or is equal to or less than the width of the light-receiving bus electrode 12B of the solar cell 10.
  • the tab 20 is arranged at an appropriate position to receive the tab 20 in the width direction of the light-receiving surface bus electrode 12B. It is soldered in the area of the surface bus electrode 12B. For this reason, the tab 20 does not create a shadow on the light receiving surface of the solar battery cell 10, and good power generation efficiency can be maintained.
  • the length of the tab 20 is a length that overlaps substantially the entire length of the one solar cell 10 and the other solar cell 10 that are adjacently arranged in the connection direction in the connection direction.
  • the tab 20 is connected to the light receiving surface bus electrode 12B in the first solar cell 10a, and a region corresponding to a space between the cells between the first solar cell 10a and the second solar cell 10b is shown in FIG. As shown, it curves from the light receiving surface side of the first solar cell 10a to the back side of the second solar cell 10b, and is connected to the back bus electrode 13b of the second solar cell 10b.
  • the tab 20 connected to the back surface bus electrode 13b of the first solar cell 10a is connected to the light-receiving surface bus electrode 12B of the solar cell 10 on the further left side of the first solar cell 10a in FIG. Connected.
  • the tab 20 connected to the light-receiving surface bus electrode 12B of the second solar cell 10b is connected to the back bus electrode 13b of the solar cell 10 on the right side of the second solar cell 10b in FIG. Connected.
  • the tabs 20 are similarly connected to the light receiving surface bus electrodes 12B and the back surface bus electrodes 13b of the other solar cells 10, and all the solar cells 10 are connected in series.
  • FIG. 9 is a flowchart illustrating a procedure of a method of manufacturing the solar cell string 50 according to the first embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing an arrangement of components in manufacturing the solar cell string 50 according to the first embodiment of the present invention.
  • FIG. 10 shows only two solar cells 10 among a plurality of solar cells 10 constituting solar cell string 50.
  • the left solar cell 10 of the two adjacent solar cells 10 is a first solar cell 10a
  • the right solar cell 10 is a second solar cell 10b.
  • the tab 20 installed on the back surface side of the solar cell 1 in step S20 is identified as a first tab 20-1
  • the tab 20 installed on the light receiving surface side of the solar cell 1 is identified as a second tab 20-2.
  • the solar cell 1 when it is necessary to distinguish between a portion provided on the back surface side of the solar cell 1 and a portion provided on the light receiving surface side of the solar cell 1 in one tab 20, the solar cell The other end portion provided on the light receiving surface side of the cell 1 is distinguished as a light receiving surface side tab region 20a, and the one end portion provided on the back surface side of the solar cell 1 is identified as a back surface tab region 20b. These are only distinguished for convenience in describing the manufacturing process of the solar cell string, and the light receiving surface side tab region 20a and the back surface side tab region 20b are not different.
  • step S10 the plurality of solar cells 1 described above are manufactured by a known method.
  • the solar cell 1 may be manufactured by a general method of manufacturing a bulk solar cell using a semiconductor substrate, and a detailed description thereof will be omitted.
  • step S20 the four first tabs 20-1 joined to the back bus electrode 13b of the solar cell 1 are arranged on the hot plate 25.
  • the hot plate 25 is a hot plate on which the tab 20 is joined to the solar cell 1.
  • the first tab 20-1 is formed by cutting a strip-shaped tab material made of a copper wire wound into a roll into a predetermined length and coating the surface with solder. Further, the first tab 20-1 can connect the light receiving surface side of one first solar cell 10a and the back surface side of the other second solar cell 10b of the two adjacent solar cells 10 to each other. As described above, molding is performed in which a step is formed at the center in the longitudinal direction of the cut tab material to form a step.
  • the four first tabs 20-1 are in a state in which the back side tab region 20 b, which is an end portion provided on the back side of the first solar cell 10 a, is in contact with the upper surface of the hot plate 25. It is placed on a predetermined position on the plate 25.
  • the four first tabs 20-1 are arranged at positions corresponding to the back bus electrodes 13b of the first solar cells 10a to be connected, with their longitudinal directions being parallel.
  • step S30 the first solar cell 10a is placed on the hot plate 25 as shown in FIG.
  • the four back bus electrodes 13b of the first solar cell 10a are connected to the first tab 20-1 in a direction parallel to the extending direction of the four first tabs 20-1 arranged on the hot plate 25. It is overlaid on the back side tab area 20b. That is, the solar cell 1 is arranged in a state where each of the four back bus electrodes 13b is in contact with the back side tab region 20b of the first tab 20-1.
  • step S40 (Arrangement of the second tab)
  • the four second tabs 20-2 are arranged such that the light receiving surface side tab region 20a at the other end provided on the light receiving surface side of the first solar cell 10a has a light receiving surface of the first solar cell 10a. It is arranged on the first solar cell 10a so as to overlap the bus electrode 12B.
  • the four second tabs 20-2 are arranged such that their longitudinal directions are parallel to each other in a state where the light receiving surface bus electrode 12B of the first solar cell 10a is in contact with the light receiving surface side tab region 20a of the second tab 20-2. And is arranged on the light receiving surface bus electrode 12B.
  • a flux is applied to the first tab 20-1, the second tab 20-2, the light receiving surface bus electrode 12B and the back surface bus electrode 13b at an appropriate timing.
  • step S50 the second solar cell 10b is placed on the hot plate 25 as shown in FIG.
  • the second solar cell 10b is formed in a state in which the back side tab region 20b, which is a portion on one end side of the four second tabs 20-2, is in contact with the back side bus electrode 13b of the second solar cell 10b. It is arranged on the back side tab area 20b of the second tab 20-2 of the book.
  • the steps of the four second tabs 20-2 are arranged in regions corresponding to the spaces between the first solar cell 10a and the second solar cell 10b.
  • step S60 the first tub 20-1 and the second tub 20-2 are heated to join the back side tab region 20b of the first tub 20-1 and the back side bus electrode 13b.
  • the light receiving surface side tab region 20a of the tab 20-2 and the light receiving surface bus electrode 12B are joined. That is, specifically, the backside tab region 20b of the first tab 20-1 and the backside bus electrode 13b are melted by melting the solder previously coated on the backside tab region 20b of the first tab 20-1. And soldered together.
  • the solder coated on the light receiving surface side tab region 20a of the second tab 20-2 and the light receiving surface side tab region 20a of the second tab 20-2 is melted.
  • the tab 20 since the tab 20 is straightened in the longitudinal direction, the tab 20 and the light-receiving surface bus electrode 12B generated by the curvature in the width direction of the light-receiving surface side tab region 20a of the second tab 20-2. The displacement is suppressed. As a result, the light receiving surface side tab region 20a of the second tab 20-2 is soldered to the light receiving surface bus electrode 12B while being kept straight. Therefore, in the first embodiment, the output of the solar cell module 100 due to a decrease in the light receiving area due to the light receiving surface side tab region 20a of the second tab 20-2 protruding from the light receiving surface bus electrode 12B in the width direction. In addition, it is possible to prevent the solar cell module 100 from lowering due to a decrease in the bonding strength between the light receiving surface bus electrode 12B and the second tab 20-2.
  • the wiring member 20L when the wiring member 20L is corrected in the tab manufacturing apparatus 30 to manufacture the tab 20, the wiring member 20L is fixed by the tab intermediate holding portion 43 and is work-hardened.
  • the tabs 20 are arranged such that the tab pressing portions 24 as portions are located at positions other than the positions between cells in the connection direction in the solar cell string 50.
  • a new solar cell 10 is placed on the back side tab area 20b of the second tub 20-2 placed in contact with the surface of the hot plate 25, and the same processing as described above is repeated to obtain a plurality of solar cells.
  • a solar cell string 50 in which the solar cells 10 are electrically connected in series is manufactured.
  • the solar cell array 70 is manufactured by soldering the tabs 20 derived from the solar cell strings 50 to the horizontal tabs 21.
  • steps S20 to S50 described above are repeatedly performed, and the first tab 20-1 and the second tab 20-2 are arranged on the plurality of solar cells 10, and the plurality of solar cells 10
  • the joining process of step S60 may be performed simultaneously and collectively.
  • the solar cell string 50 After the formation of the solar cell string 50, the output tab 22 and the like are connected to the solar cell string 50. Then, the solar cell string 50 is sandwiched between two EVA sheets, an EVA sheet serving as a light receiving surface protection material and an EVA sheet serving as a back surface side sealing material, and further sandwiched between a light receiving surface protecting material 81 and a back surface side sealing material 84.
  • a step of sealing the solar cell string 50 by sandwiching and heating at the same time as defoaming is included, but this step may be performed by a general method, and detailed description is omitted.
  • the solar cell module 100 is obtained by performing the above steps.
  • FIG. 11 is a schematic diagram of a state where two solar cells 10 are connected by tabs 20 in solar cell string 50 according to the first embodiment of the present invention.
  • the configuration of the electrodes in the solar cell 10 is omitted.
  • the left solar cell 10a of the two adjacent solar cells 10 is a first solar cell 10a
  • the right solar cell 10 is a second solar cell 10b.
  • the upper side is the light receiving surface side of the solar cells 10a and 10b.
  • the first solar cell 10a On the light receiving surface side, the first solar cell 10a has a length Y1 from the end X1 on the non-connection side in the X direction, that is, the connection direction of the solar cell 10, to the connection side in the connection direction of the solar cell 10. It is assumed that the tab 20 is joined to the connection side from a position X2 separated by a distance. The tabs 20 of the first solar cell 10a are joined from the position X2 to the position X3 of the end on the connection side on the light receiving surface side.
  • the non-connection side in the connection direction of the solar cell 10 is the side not connected to the other solar cell 10 by the tab 20 in the connection direction of the two solar cells 10 connected by one tab 20.
  • connection side in the connection direction of the solar cell 10 is a side of the side connected to the other solar cell 10 by the tab 20 in the connection direction of the two solar cells 10 connected by one tab 20. It is the end side of the solar cell 10. That is, the connection side in the connection direction of the solar cells 10 can be said to be the side on which the other solar cell 10 is disposed in the connection direction of the two solar cells 10 connected by one tab 20.
  • the second solar cell 10b has a length Y2 on the back side from the end X4 in the X direction, that is, the non-connection side in the connection direction of the solar cells 10, to the connection side in the connection direction of the solar cells 10. It is assumed that the tab 20 is arranged on the connecting side from the position X5 which is only a distance away. In the second solar cell 10b, the tab 20 is connected from the position X4 on the rear surface side to the position X6 at the end on the connection side.
  • the first solar cell 10a and the second solar cell 10b are arranged on the same plane with a distance Yg between cells.
  • the tab 20 is curved from the light receiving side of the first solar cell 10a to the back side of the second solar cell 10b at the inter-cell position, and has a light receiving surface finger electrode 12F of the first solar cell 10a, It is connected to the back bus electrode 13b of the second solar cell 10b, and connects the light receiving side of the first solar cell 10a and the back side of the second solar cell 10b.
  • the length of the first solar cell 10a in the connection direction of the solar cells 10 is defined as the first solar cell length Y3.
  • the length of the second solar cell 10b in the connection direction of the solar cells 10 is defined as the length Y4 of the second solar cell.
  • the cell length Yc which is the length of the first solar cell 10a and the second solar cell 10b in the connection direction of the solar cells 10, is represented by the following equation (1).
  • the length Y1 is much shorter than the length Y3.
  • the length Y2 is much shorter than the length Y3. Therefore, the length Y1 and the length Y2 can be ignored in Equation (1).
  • the cell length Yc is represented by the following equation (2).
  • the length of the tab 20 located at the inter-cell distance Yg increases by a length corresponding to the thickness of the solar cell 10.
  • the thickness of the solar cell 10 is about 0.1 mm or more and about 0.3 mm or less, and is so thin that there is no problem even if it is ignored. Therefore, in Embodiment 1, the length corresponding to the thickness of solar cell 10 in tab 20 is not considered here.
  • FIG. 12 is a schematic side view showing a tab manufacturing apparatus 30 that performs tab correction to correct the curvature of the tab 20 according to the first embodiment of the present invention.
  • the position in the longitudinal direction of the wiring member 20 ⁇ / b> L when the straightening is performed in the tab manufacturing device 30 and the connection direction when the solar cells 10 are connected to each other by the tabs 20 manufactured by the tab manufacturing device 30. 2 also shows the relationship between the positions of the photovoltaic cells 10 in FIG.
  • FIG. 13 is a flowchart illustrating a method of bending the tab 20 according to the first embodiment of the present invention.
  • the tab manufacturing apparatus 30 includes a bobbin 31, a pulley 32, a cutting section 41, a tab end holding section 42, and a tab intermediate holding section 43.
  • the bobbin 31 has a cylindrical shape, and is wound with a continuous wiring member.
  • a bobbin 31 is made of, for example, a resin, and has a hollow central shaft.
  • a rotary shaft (not shown) is fitted into the hollow of the central axis of the bobbin 31.
  • the wiring member 20L is made of oxygen-free copper having a width of about 1 mm or more and about 3 mm or less, and a thickness of about 0.1 mm or more and about 0.3 mm or less. ing.
  • the cutting portion 41 is arranged at a position between the tab end holding portion 42 and the tab intermediate holding portion 43, and cuts the corrected wiring member 20L to a predetermined length of the tab 20.
  • the tab end holding section 42 is fixed with the free end T0 of the wiring member 20L, that is, the end on the sending side of the wiring member 20L sent from the bobbin 31 sandwiched therebetween.
  • the tab end holding section 42 can be moved by a driving section (not shown) in a direction away from the tab intermediate holding section 43 and in a direction approaching the tab intermediate holding section 43.
  • the tab intermediate holding portion 43 is disposed between the cutting portion 41 and the bobbin 31, and is fixed by sandwiching a portion between the bobbin 31 and the tab end holding portion 42 in the wiring member 20L sent out from the bobbin 31, The middle part of the wiring member 20L is held.
  • step S110 the wiring member 20L is drawn out from the bobbin 31 and sent out.
  • the sent-out wiring material 20L passes through the pulley 32, the tab intermediate holding section 43, the cutting section 41, and the tab end holding section 42, and in the end fixing step of step S120, the end on the sending side has the tab end. It is fixed to the holding section 42 and held by the tab end holding section 42.
  • the portion between the bobbin 31 and the cutting portion 412 in the wiring member 20L that is, the portion between the bobbin 31 and the tab end holding portion 42 is attached to the tab intermediate holding portion 43 in the intermediate portion fixing step of step S130. Fixed and retained.
  • the tab end holding section 42 moves in a direction in which the wiring member 20L is pulled in the longitudinal direction, that is, the tab end holding section 42 moves in a direction away from the tab intermediate holding section 43. I do.
  • the wiring member 20L fixed to the tab end holding portion 42 and the tab intermediate holding portion 43 is pulled in the longitudinal direction.
  • the wiring member 20L sent out from the bobbin 31 retains a curve generated when the wiring member 20L is manufactured or wound around the bobbin 31.
  • the wiring material 20L having such a remaining curvature is corrected in step S140 by being pulled in the longitudinal direction of the wiring material 20L.
  • the tab intermediate holding portion 43 can withstand a lateral load when the wiring member 20L fixed to the tab intermediate holding portion 43 is pulled by the tab end holding portion 42, for example, by using a cylinder having a diameter of 10 mm. It has a possible structure.
  • the corrected wiring member 20L is cut by the cutting section 41 into a predetermined length.
  • the curvature of the wiring member 20L wound on the bobbin 31 is corrected, and the wiring member 20L is further cut to manufacture the tab 20.
  • step S110 the process returns to step S110 to repeat the above-described processing, whereby a plurality of tabs 20 are manufactured continuously.
  • the cut tab 20 is transferred to the hot plate 25 as shown in FIG. 10 and used for connection between the solar cells 10.
  • the length of the tab intermediate holding portion 43 in the longitudinal direction of the wiring member 20L is defined as the tab intermediate holding portion length Ls.
  • the position T1 at which the wiring member 20L sent from the bobbin 31 is held between the bobbin 31 and the tab end holding portion 42 satisfies the condition of the following expression (3).
  • the position T1 is a position separated from the free end T0 of the wiring member 20L by the length Lh1 toward the tab intermediate holding portion 43.
  • the position T1 is the position of the end of the tab intermediate holding portion 43 in the direction away from the tab end holding portion 42 in the longitudinal direction of the wiring member 20L where the wiring member 20L is held by the tab intermediate holding portion 43. .
  • the wiring member 20L By holding the wiring member 20L by the tab intermediate holding portion 43 at a position satisfying such a condition, the wiring member 20L can be held at a position corresponding to a position other than the inter-cell position of the tab 20.
  • the first tab 201 that has been corrected and cut first has a tab. There is no work hardened part by being sandwiched by the intermediate holding part 43.
  • FIG. 14 is a schematic diagram illustrating the positions of the cutting portion 41 and the tab pressing portion 24 in the wiring member 20L that has been first drawn out of the bobbin 31 and corrected in the tab manufacturing apparatus 30 according to the first embodiment of the present invention. It is. In FIG. 14, for easy understanding, the space between the cut first tab 201 and the wiring member 20 ⁇ / b> L is shown to be wider.
  • the feed-side end of the wiring member 20L discharged from the bobbin 31 is set to the tab end holding portion. 42.
  • the wiring member 20L has a tab between the position of the tab intermediate holding portion 43 for holding the wiring member 20L between the bobbin 31 and the tab end holding portion 42 and the tab end holding portion 42.
  • the pressing portion 24 does not occur. Therefore, as shown in FIG. 14, the first tab 201 manufactured by first pulling out the wiring member 20L from the new bobbin 31 does not have the tab pressing portion 24.
  • the tab holding portion 24 is a portion where the wiring member 20L is fixed by the tab intermediate holding portion 43 when the wiring member 20L is corrected by the tab manufacturing device 30 to manufacture the tab 20.
  • the tab intermediate holding section 43 holds the wiring member 20L from both sides of the front and back surfaces so that the wiring member 20L fixed to the tab intermediate holding section 43 can withstand a lateral load when pulled by the tab end holding section 42. Fix firmly with strong force. Therefore, work hardening occurs in the portion of the wiring member 20L fixed by the tab intermediate holding portion 43 due to being sandwiched by a strong force. Therefore, the tab holding portion 24 is a portion where work hardening has occurred when the tab 20 is straightened.
  • the tab holding portion length Lt which is the length of the tab holding portion 24 in the longitudinal direction of the wiring member 20L, that is, the longitudinal direction of the tab 20, is the tab intermediate holding portion 43, which is the width of the tab intermediate holding portion 43 in the longitudinal direction of the tab 20.
  • the width is the same as the part length Ls.
  • the wiring member 20L is corrected in the tab manufacturing apparatus 30, the wiring member 20L is fixed by the tab intermediate holding portion 43 as shown in FIG. For this reason, as shown in FIG. 14, the tab pressing portion 24 exists in the wiring member 20L from which the first tab 201 has been cut.
  • FIG. 15 is a schematic diagram showing the positions of the cutting portion 41 and the tab pressing portion 24 in step S130 when the manufacturing process is repeated from step S110 after cutting the wiring member 20L in step S150 shown in the flowchart of FIG. is there.
  • the cutting position of the wiring member 20L cut by the cutting section 41 shown in FIG. 14 is sent to the tab end holding section 42 and fixed to the tab end holding section 42. Therefore, the tab pressing portion 24 generated at the time of manufacturing the first tab 201 exists at the position from the position T1 to the position T2 shown in FIG. 14 and FIG.
  • the position T2 is a position moved from the position T1 to the tab end holding portion 42 side by the same distance as the length Ls of the tab intermediate holding portion.
  • the position T1 is located at a length Lk1 from the position T3, which is the free end of the wiring member 20L, to the tab end holding section 42 side.
  • the length Lk1 is considered in accordance with the position of the solar cell 10 in the connection direction when the solar cells 10 are connected by the tabs 20 manufactured by the tab manufacturing apparatus 30 as shown in FIGS. 14 and 15. And the following equation (5).
  • FIG. 16 is a schematic diagram showing the positions of the cutting portion 41 and the tab pressing portion 24 in FIG. 15 when the second tab 202 is cut in step S150 shown in the flowchart of FIG.
  • the length Lk1 is a distance from the free end of the wiring member 20L from which the first tab 201 has been cut, and is a position from the position T3.
  • the tab pressing portion 24 is formed in a region other than the region corresponding to the step portion of the inter-cell region in the solar cell string 50 when the solar cell string 50 is formed. Are continuously produced.
  • the second tab 202 that satisfies the condition of the above expression (9) has a tab holding portion 24 that is a work-hardened region, and the solar cell is located in the longitudinal direction of the second tab 202. , That is, the region other than the region corresponding to the inter-cell region between the solar cells. That is, in the solar cell string 50 connected by using the second tab 202, the tab pressing portion 24 does not exist in the step portion of the inter-cell region of the tab 20.
  • the tab pressing portions 24 of the second and subsequent tabs 20 are deformed and work hardened by pressing and fixing the wiring member 20L with the cylinder of the tab intermediate holding portion 43, and the fatigue resistance is reduced. I have. For this reason, when the tab pressing portion 24 is located in the inter-cell region between the first solar cell 10a and the second solar cell 10b, expansion and contraction of the tab 20 occurs due to a temperature change in the actual environment, and fatigue resistance is increased. There is a possibility that disconnection may occur due to stress applied to the portion where is reduced.
  • the above-described second tab 202 does not have the tab pressing portion 24 in the region corresponding to the inter-cell region where the step portion is formed. Therefore, in the solar cell module 100, the above-described problem due to the presence of the tab pressing portion 24 in the step portion of the inter-cell region of the tab 20 does not occur.
  • FIG. 17 is a schematic diagram of a state where two solar cells 10 are connected by the second tab 202 according to the first embodiment of the present invention.
  • the tab holding section 24 Is in a portion overlapping the first solar cell 10a. This makes it possible to avoid disposing the tab pressing portion 24, which is a work-hardened region, in the inter-cell region between the first solar cell 10a and the second solar cell 10b.
  • a highly durable solar cell connection tab 20 in which disconnection due to fatigue caused by a temperature change in an actual environment to which solar cell module 100 is exposed is suppressed, and this solar cell connection
  • the effect of providing the tab 20 is that the solar cell module 100 with improved durability can be obtained.
  • Embodiment 2 FIG.
  • the other correction method of the tab 20 according to the second embodiment is the same as the correction method of the tab 20 according to the first embodiment except that the position of the tab intermediate holding portion 43 is different. Therefore, the difference from the method of correcting the tab 20 according to the first embodiment will be described below.
  • FIG. 18 is a schematic side view showing another method of correcting the tab 20 according to the second embodiment of the present invention.
  • FIG. 18 is a diagram corresponding to FIG. 12 except that the bobbin 31 and the pulley 32 are omitted.
  • the position T11 at which the tab intermediate holding portion 43 holds the wiring member 20L sent from the new bobbin 31 is the free end T0 of the wiring member 20L, that is, the sending of the wiring member 20L sent from the bobbin 31. It is a position of the length Lh2 from the side end.
  • the position T11 is a position of an end in a direction approaching the tab end holding portion 42 in the longitudinal direction of the wiring member 20L where the wiring member 20L is held by the tab intermediate holding portion 43. That is, the position T11 is the position of the end on the tab end holding section 42 side where the wiring member 20L is held by the tab intermediate holding section 43.
  • the wiring member 20L By holding the wiring member 20L by the tab intermediate holding portion 43 at a position satisfying such a condition, the wiring member 20L can be held at a position corresponding to a position other than the inter-cell position of the tab 20.
  • the first tab 203 that has been corrected and cut first has a tab. There is no work hardened part by being sandwiched by the intermediate holding part 43.
  • FIG. 19 is a schematic diagram showing the positions of the cutting portion 41 and the tab pressing portion 24 in the wiring member 20L that has been first drawn out of the bobbin 31 and corrected in the tab manufacturing apparatus 30 shown in FIG.
  • FIG. 19 is a diagram corresponding to FIG.
  • the wiring member 20L When the wiring member 20L is corrected while being fixed at the position T11, the wiring member 20L is fixed by the tab intermediate holding portion 43 as shown in FIG. For this reason, as shown in FIG. 19, the tab holding portion 24 exists in the wiring member 20L from which the first tab 203 has been cut.
  • FIG. 20 is a schematic diagram showing the positions of the cutting portion 41 and the tab pressing portion 24 in step S130 when the manufacturing process is repeated from step S110 again after cutting the wiring member 20L in step S150 shown in the flowchart of FIG. is there.
  • FIG. 20 is a diagram corresponding to FIG. In this case, the cutting position of the wiring member 20L cut by the cutting section 41 shown in FIG. 20 is sent to the tab end holding section 42 and fixed to the tab end holding section 42. Therefore, the tab pressing portion 24 generated at the time of manufacturing the first tab 203 exists at the position from the position T11 to the position T12 shown in FIGS.
  • the position T12 is a position moved from the position T11 by the same distance as the length Ls of the tab intermediate holding portion in a direction away from the tab end holding portion 42.
  • a position T11 is located at a length Lk2 from the position T13, which is a free end of the wiring member 20L, to the tab intermediate holding portion 43 side.
  • the length Lk2 is considered in accordance with the position of the solar cell 10 in the connection direction when the solar cells 10 are connected by the tabs 20 manufactured by the tab manufacturing apparatus 30 as shown in FIGS. 19 and 20. And the following equation (12).
  • the position T11 exists at a position that satisfies the above expression (14).
  • FIG. 21 is a schematic diagram showing the positions of the cutting portion 41 and the tab pressing portion 24 when the second tab 204 is cut in step S150 shown in the flowchart of FIG. 13 in FIG.
  • the wiring member 20L in which the tab holding portion 24 is present in the region from the position T11 to the position T12 at the position of the length Lk2 from the position T13 is cut at a predetermined length to form the second line. Is separated from the wiring member 20L.
  • the length Lk2 is a distance from the free end of the wiring member 20L from which the first tab 203 has been cut, and is a position from the position T13.
  • the tab pressing portion 24 is formed in a region other than the region corresponding to the step portion of the inter-cell region in the solar cell string 50 when the solar cell string 50 is formed. Are continuously produced.
  • the second tab 204 that satisfies the condition of the above equation (14) has a tab holding portion 24 that is a work-hardened region, and the solar cell is positioned in the longitudinal direction of the second tab 204. , That is, the region other than the region corresponding to the inter-cell region between the solar cells. That is, in the solar cell string 50 connected using the second tab 204, the tab pressing portion 24 does not exist at the step portion of the inter-cell region of the tab 20.
  • FIG. 22 is a schematic diagram of a state where two solar cells 10 are connected by the second tab 204 according to the second embodiment of the present invention.
  • the tab pressing portion 24 is located at a portion overlapping the second solar cell 10b. This makes it possible to avoid disposing the tab pressing portion 24, which is a work-hardened region, in the inter-cell region between the first solar cell 10a and the second solar cell 10b. The same applies to the third and subsequent tabs 20 manufactured after the second tab 204 is manufactured.
  • the tab holding portion 24 of the second tab 204 has a deformed shape due to the pressing of the wiring member 20L by the cylinder of the tab intermediate holding portion 43, which causes work hardening, and the fatigue resistance is reduced. For this reason, when the tab pressing part 24 is located between the cells between the first solar cell 10a and the second solar cell 10b, the expansion and contraction of the tab occurs due to the temperature change in the actual environment, and the fatigue resistance is reduced. There is a possibility that disconnection may occur due to stress applied to the part where it is present.
  • the tab holding portion 24 does not exist in the region corresponding to the inter-cell region where the step portion is formed. Therefore, in the solar cell module 100, the above-described problem due to the presence of the tab pressing portion 24 at the step in the inter-cell region does not occur.
  • FIG. 23 is a schematic diagram showing a positional relationship among the light-receiving surface bus electrode 12B, the back surface bus electrode 13b, the tab 20, and the tab pressing portion 24 of the solar cell according to the second embodiment of the present invention. As shown in FIG. 23, it is more preferable that the tab pressing portions 24 of the tabs 20 are located at positions where they do not overlap with the back surface bus electrodes 13b.
  • the tab pressing portion 24 of the tab 20 is slightly deformed at the time of straightening, and when the tab pressing portion 24 of the tab 20 is connected to the back surface bus electrode 13b, the contact area with the electrode is reduced due to the deformation, so that the tab pressing portion 24 is strong. Connection may not be possible, and the contact resistance may increase. An increase in contact resistance may lead to a decrease in power generation efficiency of the solar cell module 100 and a decrease in long-term reliability.
  • 10 solar cell 10a first solar cell, 10b second solar cell, 11 semiconductor substrate, 11A light receiving surface of semiconductor substrate, 11B light receiving surface of semiconductor substrate, 12 light receiving surface electrode, 12B light receiving surface bus electrode, 12F Light-receiving surface finger electrode, 13 back electrode, 13a back current collecting electrode, 13b back bus electrode, 20 solar cell connection tab, 20L wiring material, 20a light-receiving side tab area, 20b back side tab area, 21 horizontal tab, 22 output Tab, 24 tab holding section, 25 hot plate, 30 tab manufacturing device, 31 bobbin, 32 pulley, 41 cutting section, 42 tab end holding section, 43 tab intermediate holding section, 50 solar cell string, 70 solar cell array, 81 Light receiving surface protection material, 82 ° back surface protection material, 83 ° light receiving surface side sealing material, 8 Back-surface-side sealing member, 100 a solar cell module, 201 and 203 the first run of tabs 202, 204 two first tabs, Ls tab intermediate holding unit length.

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  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention porte sur un module de cellule solaire comprenant une première cellule solaire (10a) et une seconde cellule solaire (10b) agencées en parallèle sur le même plan et entre lesquelles une région inter-cellules est interposée, dans lequel la languette de connexion de cellule solaire est connectée à une électrode formée sur un côté de surface de réception de lumière de la première cellule solaire (10a) et à une électrode formée sur un côté de surface arrière de la seconde cellule solaire (10b) tout en étant incurvée depuis le côté de surface de réception de lumière de la première cellule solaire (10a) jusqu'au côté de surface arrière de la seconde cellule solaire (10b). Dans la languette de connexion de cellule solaire, une région écrouie se situe dans une région autre qu'une région correspondant à la région inter-cellules entre la première cellule solaire (10a) et la seconde cellule solaire (10b).
PCT/JP2018/033987 2018-09-13 2018-09-13 Languette de connexion de cellule solaire, appareil et procédé de fabrication de languette de connexion de cellule solaire, et module de cellule solaire WO2020054020A1 (fr)

Priority Applications (1)

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PCT/JP2018/033987 WO2020054020A1 (fr) 2018-09-13 2018-09-13 Languette de connexion de cellule solaire, appareil et procédé de fabrication de languette de connexion de cellule solaire, et module de cellule solaire

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PCT/JP2018/033987 WO2020054020A1 (fr) 2018-09-13 2018-09-13 Languette de connexion de cellule solaire, appareil et procédé de fabrication de languette de connexion de cellule solaire, et module de cellule solaire

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006310798A (ja) * 2005-03-31 2006-11-09 Sanyo Electric Co Ltd 太陽電池モジュール及びその製造方法
JP2007141621A (ja) * 2005-11-17 2007-06-07 Marusho Kk 太陽電池用リード線
JP2007173619A (ja) * 2005-12-22 2007-07-05 Sharp Corp 太陽電池モジュール製造方法および太陽電池モジュール製造装置
JP2009164212A (ja) * 2007-12-28 2009-07-23 Sharp Corp 太陽電池モジュール製造方法および太陽電池モジュール製造装置
JP2011210868A (ja) * 2010-03-29 2011-10-20 Hitachi Cable Ltd 太陽電池接続用複合平角線及びその製造方法
US20170229601A1 (en) * 2014-10-27 2017-08-10 Zeus Co., Ltd. Wire transfer apparatus of tabbing apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006310798A (ja) * 2005-03-31 2006-11-09 Sanyo Electric Co Ltd 太陽電池モジュール及びその製造方法
JP2007141621A (ja) * 2005-11-17 2007-06-07 Marusho Kk 太陽電池用リード線
JP2007173619A (ja) * 2005-12-22 2007-07-05 Sharp Corp 太陽電池モジュール製造方法および太陽電池モジュール製造装置
JP2009164212A (ja) * 2007-12-28 2009-07-23 Sharp Corp 太陽電池モジュール製造方法および太陽電池モジュール製造装置
JP2011210868A (ja) * 2010-03-29 2011-10-20 Hitachi Cable Ltd 太陽電池接続用複合平角線及びその製造方法
US20170229601A1 (en) * 2014-10-27 2017-08-10 Zeus Co., Ltd. Wire transfer apparatus of tabbing apparatus

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